Memory leaks in realtime_multi_xxx() when database access returns error.

* Fix realtime_multi_pgsql() configuration memory leak when the database 
access returns an error.  

* Fix realtime_multi_odbc() configuration category use after free when the
database access returns an error.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@332816 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_config_odbc.c

@@ -419,7 +419,7 @@ static struct ast_config *realtime_multi_odbc(const char *database, const char *
 			if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 				ast_log(LOG_WARNING, "SQL Describe Column error!\n[%s]\n\n", sql);
 				ast_category_destroy(cat);
-				continue;
+				goto next_sql_fetch;
 			}
 
 			indicator = 0;
@@ -430,7 +430,7 @@ static struct ast_config *realtime_multi_odbc(const char *database, const char *
 			if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 				ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", sql);
 				ast_category_destroy(cat);
-				continue;
+				goto next_sql_fetch;
 			}
 			stringp = rowdata;
 			while (stringp) {
@@ -448,6 +448,7 @@ static struct ast_config *realtime_multi_odbc(const char *database, const char *
 			}
 		}
 		ast_category_append(cfg, cat);
+next_sql_fetch:;
 	}
 
 	SQLFreeHandle(SQL_HANDLE_STMT, stmt);

res/res_config_pgsql.c

@@ -474,6 +474,7 @@ static struct ast_config *realtime_multi_pgsql(const char *database, const char
 			PQfinish(pgsqlConn);
 			pgsqlConn = NULL;
 		}
+		ast_config_destroy(cfg);
 		return NULL;
 	}
 
@@ -494,6 +495,7 @@ static struct ast_config *realtime_multi_pgsql(const char *database, const char
 	if (pgresult) {
 		ast_log(LOG_ERROR, "Postgres detected invalid input: '%s'\n", newval);
 		va_end(ap);
+		ast_config_destroy(cfg);
 		return NULL;
 	}
 
@@ -509,6 +511,7 @@ static struct ast_config *realtime_multi_pgsql(const char *database, const char
 		if (pgresult) {
 			ast_log(LOG_ERROR, "Postgres detected invalid input: '%s'\n", newval);
 			va_end(ap);
+			ast_config_destroy(cfg);
 			return NULL;
 		}
 
@@ -525,6 +528,7 @@ static struct ast_config *realtime_multi_pgsql(const char *database, const char
 	ast_mutex_lock(&pgsql_lock);
 	if (!pgsql_reconnect(database)) {
 		ast_mutex_unlock(&pgsql_lock);
+		ast_config_destroy(cfg);
 		return NULL;
 	}
 
@@ -534,6 +538,7 @@ static struct ast_config *realtime_multi_pgsql(const char *database, const char
 		ast_debug(1, "PostgreSQL RealTime: Query: %s\n", ast_str_buffer(sql));
 		ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s\n", PQerrorMessage(pgsqlConn));
 		ast_mutex_unlock(&pgsql_lock);
+		ast_config_destroy(cfg);
 		return NULL;
 	} else {
 		ExecStatusType result_status = PQresultStatus(result);
@@ -547,6 +552,7 @@ static struct ast_config *realtime_multi_pgsql(const char *database, const char
 						PQresultErrorMessage(result), PQresStatus(result_status));
 			PQclear(result);
 			ast_mutex_unlock(&pgsql_lock);
+			ast_config_destroy(cfg);
 			return NULL;
 		}
 	}
@@ -564,6 +570,7 @@ static struct ast_config *realtime_multi_pgsql(const char *database, const char
 		if (!(fieldnames = ast_calloc(1, numFields * sizeof(char *)))) {
 			PQclear(result);
 			ast_mutex_unlock(&pgsql_lock);
+			ast_config_destroy(cfg);
 			return NULL;
 		}
 		for (i = 0; i < numFields; i++)